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 A198511 T(n,k)=Number of 2nX2k 0..4 arrays with values 0..4 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors 3

%I #5 Mar 31 2012 12:36:34

%S 4,59,59,1626,4666,1626,52065,308854,308854,52065,1720080,23016128,

%T 59007820,23016128,1720080,57202471,1768050096,13127875861,

%U 13127875861,1768050096,57202471,1905005414,137433138206,3023133941944

%N T(n,k)=Number of 2nX2k 0..4 arrays with values 0..4 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors

%C Table starts

%C ........4.........59........1626.......52065.......1720080.....57202471

%C .......59.......4666......308854....23016128....1768050096.137433138206

%C .....1626.....308854....59007820.13127875861.3023133941944

%C ....52065...23016128.13127875861

%C ..1720080.1768050096

%C .57202471

%e Some solutions for n=3 k=2

%e 0..1..1..0....0..1..0..2....0..1..1..2....0..1..1..0....0..1..1..0

%e 2..3..3..4....2..1..0..0....1..3..3..1....1..2..2..3....2..3..3..1

%e 2..3..3..4....2..1..1..1....1..3..3..1....1..2..2..3....2..3..3..1

%e 4..4..4..2....0..3..3..3....2..2..2..2....2..3..3..2....0..4..4..3

%e 3..3..4..2....0..3..4..4....0..0..1..1....2..3..3..2....0..4..4..3

%e 0..3..4..3....2..3..4..2....2..0..1..0....4..0..0..1....2..1..1..0

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Oct 25 2011

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Last modified September 10 19:41 EDT 2024. Contains 375794 sequences. (Running on oeis4.)